Note 11 - Equity (Details Textual)
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3 Months Ended |
9 Months Ended |
12 Months Ended |
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Dec. 31, 2023
USD ($)
$ / shares
shares
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Oct. 16, 2023
shares
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Aug. 29, 2023
$ / shares
shares
|
Jul. 08, 2023
shares
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May 01, 2023
$ / shares
shares
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Mar. 15, 2023
USD ($)
shares
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Feb. 23, 2023
$ / shares
shares
|
Feb. 16, 2023
USD ($)
$ / shares
shares
|
Nov. 23, 2022 |
Sep. 15, 2022
USD ($)
$ / shares
shares
|
Aug. 17, 2022
USD ($)
shares
|
Jul. 05, 2022
shares
|
Sep. 30, 2024
USD ($)
$ / shares
shares
|
Sep. 30, 2023
USD ($)
|
Sep. 30, 2024
USD ($)
$ / shares
shares
|
Sep. 30, 2023
USD ($)
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Dec. 31, 2023
USD ($)
$ / shares
shares
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Dec. 31, 2022
USD ($)
$ / shares
shares
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Jul. 15, 2023
shares
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Jun. 15, 2023
$ / shares
shares
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Feb. 17, 2023
$ / shares
shares
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Aug. 16, 2022
$ / shares
shares
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Jul. 04, 2022
$ / shares
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Dec. 31, 2021
$ / shares
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Proceeds from Issuance or Sale of Equity | $ |
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$ 4,643,000
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$ 290,000
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Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
$ 2.07
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$ 2.07
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$ 2.26
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$ 7.5
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Stock Repurchased and Retired During Period, Shares (in shares) |
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4,217
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Shares Authorized (in shares) |
2,500,000,000
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2,500,000,000
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Common Stock, Shares Authorized (in shares) |
100,000,000
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100,000,000
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100,000,000
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100,000,000
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2,470,000,000
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Preferred Stock, Shares Authorized (in shares) |
3,120,000
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1,000,000
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1,000,000
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3,120,000
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Share-Based Payment Arrangement, Expense | $ |
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$ 2,316,000
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$ 78,000
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$ 2,433,000
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$ 226,000
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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Fair Value | $ |
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1,600
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0
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$ 692,000
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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value | $ |
$ 0
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0
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0
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$ 0
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$ 0
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Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ |
$ 434,000
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621,000
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$ 621,000
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$ 434,000
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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |
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3,148,288
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335,728
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795,916
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Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |
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5 years
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5 years
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5 years
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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares) |
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362,584
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185,704
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246,883
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Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |
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3 years
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Share-Based Payment Arrangement, Option [Member] |
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Share-Based Payment Arrangement, Expense | $ |
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$ 1,296,000
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$ 78,000
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$ 1,413,000
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$ 226,000
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$ 295,000
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$ 60,000
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Reverse Stock Split [Member] |
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Stockholders' Equity Note, Stock Split, Conversion Ratio |
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750
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Previously Reported [Member] |
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Common Stock, Shares Authorized (in shares) |
2,470,000,000
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2,470,000,000
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2,470,000,000
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Preferred Stock, Shares Authorized (in shares) |
30,000,000
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30,000,000
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30,000,000
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Conversion of Series B Preferred Stock to Common Stock [Member] |
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Preferred Stock, Mandatory Conversion Feature, Offering Proceeds Threshold | $ |
$ 1,000
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$ 1,000
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Preferred Stock, Convertible, Conversion Ratio |
1
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1
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Conversion of Stock, Shares Converted (in shares) |
14,578,833
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Preferred Stock, Mandatory Conversion Feature, Company Valuation | $ |
$ 18,000
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$ 18,000
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Related Party [Member] | Consulting Fees [Member] |
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Shares Issued, Price Per Share (in dollars per share) | $ / shares |
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$ 0.0041
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Stock Issued During Period, Shares, Issued for Services (in shares) |
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284,964
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August 2022 Securities Purchase Agreement Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |
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13,333
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Series C Preferred Unit Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |
1
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1
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1
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1
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1
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Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
$ 2.56
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$ 2.56
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$ 24.62
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$ 24.62
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$ 2.56
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Warrants and Rights Outstanding, Term (Year) |
3 years
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3 years
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3 years
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3 years
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Warrants or Rights Issued (in shares) |
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759,863
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Noncash Warrants Issued (in shares) |
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781,250
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Tranche A Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |
526,749
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526,749
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Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
$ 0.75
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$ 0.75
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$ 0.75
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Class of Warrant or Right, Exercise Price, Purchase Price Numerator | $ |
$ 50,000
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$ 50,000
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Tranche B Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |
262,051
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262,051
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Class of Warrant or Right, Exercise Price, Purchase Price Numerator | $ |
$ 150,000
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$ 150,000
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Convertible Debt and Stock Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |
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198,482
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Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 3
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WPC Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |
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123,333
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Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 0.00473
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Series A Warrants [Member] |
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Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |
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629,039
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6,048,456
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Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 0.01
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Warrants and Rights Outstanding, Term (Year) |
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5 years
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5 years
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Series A Preferred Stock [Member] |
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Stock Issued During Period, Shares, New Issues (in shares) |
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3,198,421
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Preferred Stock, Shares Authorized (in shares) |
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Series B Preferred Stock [Member] |
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Stock Issued During Period, Shares, New Issues (in shares) |
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14,578,833
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10,799,136
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Shares Issued, Price Per Share (in dollars per share) | $ / shares |
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$ 0.1852
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Proceeds from Issuance of Preferred Stock and Preference Stock | $ |
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$ 2,700,000
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Payments of Stock Issuance Costs | $ |
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$ 92,000
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Preferred Stock, Mandatory Conversion Feature, Offering Proceeds Threshold | $ |
$ 1,000,000
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$ 1,000,000
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Preferred Stock, Convertible, Conversion Ratio |
1
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1
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Preferred Stock, Shares Authorized (in shares) |
30,000,000
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30,000,000
|
30,000,000
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Series C Preferred Stock [Member] |
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Proceeds from Issuance or Sale of Equity | $ |
$ 1,969,000
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Payments of Stock Issuance Costs | $ |
$ 67,000
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Units Issued During Period, New Issues (in shares) |
1,538,134
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|
7,812,500
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Preferred Stock, Mandatory Conversion Feature, Offering Proceeds Threshold | $ |
$ 2,000
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$ 2,000
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Preferred Stock, Shares Authorized (in shares) |
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Preferred Stock, Mandatory Conversion Feature, Company Valuation | $ |
$ 65,000
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$ 65,000
|
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Series C Preferred Stock [Member] | Series C Preferred Unit Warrants [Member] |
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Class of Warrant or Right, Combined Purchase Price (in dollars per share) | $ / shares |
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|
$ 1.28
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Securities Purchase Agreement [Member] |
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|
Stock Issued During Period, Shares, New Issues (in shares) |
|
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|
|
|
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|
32,536,386
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51,282
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Proceeds from Issuance or Sale of Equity | $ |
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$ 133,000
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$ 250,000
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Shares Issued, Price Per Share (in dollars per share) | $ / shares |
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$ 0.0041
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$ 4.87
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Securities Purchase Agreement [Member] | Series A Preferred Stock [Member] |
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Stock Issued During Period, Shares, New Issues (in shares) |
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10,000,000
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Proceeds from Issuance or Sale of Equity | $ |
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$ 40,000
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